CN103660550B - Inspection apparatus for sheet - Google Patents

Inspection apparatus for sheet Download PDF

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Publication number
CN103660550B
CN103660550B CN201310415346.3A CN201310415346A CN103660550B CN 103660550 B CN103660550 B CN 103660550B CN 201310415346 A CN201310415346 A CN 201310415346A CN 103660550 B CN103660550 B CN 103660550B
Authority
CN
China
Prior art keywords
sheet
paper
light
ultraviolet
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310415346.3A
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Chinese (zh)
Other versions
CN103660550A (en
Inventor
大滨贤太郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komori Corp
Original Assignee
Komori Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komori Corp filed Critical Komori Corp
Publication of CN103660550A publication Critical patent/CN103660550A/en
Application granted granted Critical
Publication of CN103660550B publication Critical patent/CN103660550B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/645Specially adapted constructive features of fluorimeters
    • G01N21/6456Spatial resolved fluorescence measurements; Imaging
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12Visible light, infrared or ultraviolet radiation
    • G07D7/121Apparatus characterised by sensor details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F33/00Indicating, counting, warning, control or safety devices
    • B41F33/0036Devices for scanning or checking the printed matter for quality control
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/89Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12Visible light, infrared or ultraviolet radiation

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention provides an inspection apparatus for a sheet, which can examine in detail the existence, profile and position of a print which is applied with penetrating processing. An inspection apparatus (40) for a sheet of paper (W) subjected to a process to impart a translucent property such as a '' watermark'' or a '' security window'' includes: an inspection cylinder (45) in which a surface facing the sheet of paper (W) is provided with a luminescence-producing portion (45a); UV-LED illuminators (41a, 41b) which irradiate the sheet of paper (W) with light containing the ultraviolet rays; a color camera (42) which images the sheet of paper (W); an ultraviolet cut filter (43) which eliminates the ultraviolet rays in the light emitted from the UV-LED illuminators (41a, 41b) and reflected off the sheet of paper (W) as well as the luminescence-producing portion (45a) and makes only the light having wavelengths longer than wavelengths of the ultraviolet rays incident on the color camera (42); and a control device (46) which determines appropriateness of a processed portion (PE) on the sheet of paper (W) having the translucent property on the basis of luminescence in a visible light range produced by the luminescence-producing portion (45a) and made incident on the color camera (42).

Description

Sheet-shaped check device
Technical field
The present invention relates to be applied with the sheet-shaped inspection dress with the processing through characteristic such as watermark and security window Put.
Background technology
The printed article such as bank note and marketable securities in order to false proof, in addition to common pattern part, mostly on paper and Implement that there is watermark and security window for passing through characteristic etc. to process in paper inside.When watermark refers to that meeting light observes, present on paper Go out brighter(It is then darker by the light reflected in dark background)The image that can be distinguished and lines, in the manufacture of the watermark Cheng Zhong, using the pressing mold etc. of the metal for being coated with water, makes the thickness of paper of local change and form jut and recessed portion, So as to lines is presented on paper.Additionally, in the watermark used on bank note etc., there is the special watermark for being referred to as Heisui River print.Due to It conversely, employ the method that the part of watermark is thickeied into copy paper, can show deep or light level, so energy with general watermark Present the same manifestation mode of drawing.On the other hand, security window is referred to does not carry out two sides base on transparent polymer paper Print and the only transparent region of film at bottom.Sometimes portrait and word are also printed in the security window.
Therefore, for implementing the printed article of the processing such as watermark and security window, need to check that it whether there is, profile and position Put.
Patent document 1:Japanese Laid-Open Patent Publication 2010-221410
But in the past, disclose patent document 1 etc. as the check device of the pattern part for checking common ink printing Various technical schemes, without open for implementing the printing quality testing with the processing through characteristic such as watermark and security window Look into its whether there is, the device of profile and position.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of sheet-shaped check device, can be for real Applied the printed article with the processing through characteristic such as watermark and security window, detailed inspection its whether there is, profile and position.
It is to implement to have to add through characteristic for the sheet-shaped check device of the invention for solving the above problems The sheet-shaped check device of work, it includes:Supporting member, utilizes with the sheet-shaped relative face and is irradiated by ultraviolet When send visible region the material of light processed;Light source, to the sheet-shaped irradiation bag light with violet rays;Shooting Device, shoots described sheet-shaped;Ultraviolet filter, by it is reflecting from described sheet-shaped and described supporting member, from The ultraviolet cutoff of the light of the light source, only makes the incident camera head of light of the wavelength length of wavelength ratio ultraviolet;And control Device processed, using the incident camera head, the light of visible region that sends from the supporting member, judges the thin slice Whether the processing of the transmission characteristic of shape part is qualified.
According to the sheet-shaped check device of the present invention, by making the ultraviolet from light source irradiation watermark and peace are only transmitted Full window etc. is irradiated in supporting member with the processing part through characteristic, so as in the shooting of camera head, due to The processing department distributes light, and other parts are dimmed, it is possible to have passing through characteristic processing department to watermark and security window etc. Point the presence or absence of, profile and position carry out detailed inspection.
Description of the drawings
Fig. 1 is the brief configuration figure of the check device of one embodiment of the invention.
Fig. 2 is the control block diagram of one embodiment of the invention.
Fig. 3 is the explanatory diagram of the pattern on the scraps of paper.
Description of reference numerals
40 check devices
41a, 41b UV-LED luminaires(Light source)
42 color cameras(Camera head)
42a lens
42b CCD(Charge Coupled Device, charge coupled cell)
43 ultraviolet cutoff wave filters(Ultraviolet filter)
44 scaffolds
45 check cylinder(Supporting member)
45a lights processing unit
46 control devices
50 benchmark memories
51 detection memories
52 decision level initialization circuits
53 comparison circuits
55 Memory Controllers
56 amplifiers
57 A/D converters
58 amendment circuits
59 CCD controllers
W paper(It is sheet-shaped)
The Wa scraps of paper(Bank note and marketable securities etc.)
PE has the processing part through characteristic
The pattern part that VE is printed with visual ink
Specific embodiment
Hereinafter, the sheet-shaped check device of the present invention is illustrated using accompanying drawing.
(Embodiment)
Fig. 1 is the brief configuration figure of the check device of one embodiment of the invention, and Fig. 2 is control block diagram.Additionally, Fig. 3 is The explanatory diagram of the pattern on the scraps of paper.
As shown in figure 1, implementing watermark and security window etc. with the processing through characteristic by processor (not shown) Paper(It is sheet-shaped)W, is passed to inspection cylinder(Supporting member:Can also be impression cylinder and transfer roller)45.It is described The surface for checking cylinder 45 is provided with the luminous processing unit 45a of specific thickness, when the luminous processing unit 45a by ultraviolet by being irradiated Luminous material process is formed.Luminous processing unit 45a preferably applies fluorescent paint or winding peace in the side face for checking cylinder 45 Dress includes the film of fluorescent dye or fluorescent paint to be processed.
Also, utilize and check the inspected of check device 40 that the side face of cylinder 45 the is oppositely arranged paper W of printing quality, It is transported to after paper delivery unit by conveying device (not shown), is deposited on paper out station.
Check device 40 is used to check in paper W, watermark and security window etc. with the processing part through characteristic that it to be wrapped Include:A pair of bag light with violet rays are irradiated to paper W(Can not also be paired)UV(Ultraviolet)- LED illuminator(Such as wavelength peak It is worth the light source for 365nm)41a、41b;1 color camera(Camera head)42, shoot paper W;Ultraviolet cutoff wave filter(It is purple Outer line filter)43, the UV regions i.e. ripple of the light from UV-LED luminaire 41a, 41b that paper W and inspection cylinder 45 are reflected The long light in below 410nm ends, and only makes wavelength exceed the light incidence color camera 42 of ultraviolet wavelength;And control device 46, using incident color camera 42, from the wavelength that sends of luminous processing unit 45a for checking cylinder 45 exceed the ripple of ultraviolet The light of long visible region, judges whether watermark and security window on paper W etc. are qualified with the processing part through characteristic.
Color camera 42 is relative to the center line for checking cylinder 45(Cylinder axis)It is arranged in normal direction N, and On the position of imaging surface that paper W is shot from vertical direction, it is bearing on main machine frame (not shown) by scaffold 44.Separately Outward, UV-LED luminaires 41a, 41b are also bearing on main machine frame by scaffold (not shown).Alternatively, it is also possible to examine Look into device 40 to be arranged in the darkroom being provided separately with printing machine.
Then, the optical texture and electrical structure of the check device 40 of the present embodiment are illustrated using Fig. 2.Check device 40 has It is standby:The above-mentioned color camera 42 and control device 46 of paper W are shot, the control device 46 is according to the color camera 42 Shooting output come check on paper W process with the processing part through characteristic.Color camera 42 has comprising lens 42a Optical system and CCD(Charge Coupled Device, charge coupled cell)42b, the CCD42b will be by described The image of optical system imaging is converted to electric signal.
Control device 46 includes:Benchmark memory 50, Memory Reference picture signal;Detection memory 51, storage detection figure As signal;Memory Controller 55, controls the write and reading to benchmark memory 50 and detection memory 51;Decision level sets Determine circuit 52, set two signals reading from benchmark memory 50 and detection memory 51 allows level difference;Comparison circuit 53, it is considered to which what is set in decision level initialization circuit 52 allows level difference, and two signals are compared;Amplifier 56, will The output of CCD42b is amplified;A/D converter 57, will be defeated to Memory Controller 55 after the output Analog-digital Converter of amplifier 56 Go out;Amendment circuit 58, adjusts the gain of amplifier 56;And CCD controllers 59, control CCD42b.
When printing work starts, benchmark memory 50 store from paper W normal process with through characteristic plus The reference image data that the Ministry of worker point reads in.In addition, benchmark memory 50 stores the different reference image data of each printing work. Detection memory 51 stores the inspection image data read in from the paper W as check object.
Memory Controller 55 controls the data write to benchmark memory 50 and detection memory 51 and reads.Judge electricity Flat initialization circuit 52 presets the reference image data read from benchmark memory 50 with the inspection read from detection memory 51 Allow level difference between altimetric image data.
When the reference image data read by Memory Controller 55 and the level difference of inspection image data are reached by judging When allowing more than level difference of the setting of electric level predeterming circuit 52, comparison circuit 53 is exported for representing the processing having through characteristic The bad signal of partial quality.That is, by comparing reference image data corresponding with each pixel of CCD42b and detection one by one View data, compares the level of two data corresponding with each pixel, even if when only one of which reaches more than allowance, also exporting Bad signal.
Specifically, comparison circuit 53 carries out following first comparison, i.e. compare successively from benchmark according to each pixel Reference image data and the inspection image data from the detection reading of memory 51 that memory 50 reads.Then, comparison circuit 53 Carry out following second comparison, i.e. compare the level difference of two signals obtained by the first comparison and from decision level What initialization circuit 52 was exported allows level difference.Allow when the level difference that the result of second comparison is two signals is more than During level difference, comparison circuit 53 export for be denoted as on the paper W of check object process with the processing department through characteristic Divide bad bad signal.
Amendment circuit 58 adjusts the gain of amplifier 56 corresponding to the rotary speed for checking cylinder 45.That is, even if in coloured silk When the incidence of color camera 42 has same light quantity, check that the rotary speed of cylinder 45 is faster, then the output level of CCD42b is less.Cause This, by correcting circuit 58 impact of rotary speed is removed.The phase signal for checking cylinder 45 is provided to memory control Device 55, comparison circuit 53, amendment circuit 58 and CCD controllers 59.A reference value storage signal is provided to Memory Controller 55. Judge that commencing signal is provided to Memory Controller 55 and comparison circuit 53.
The rotary encoder of the rotatable phase of cylinder 45 is checked by detection(Omit diagram)Output signal generate phase place letter Number, phase signal includes checking that cylinder 45 often rotates a circle the reference pulse of rising, and on checking cylinder 45 per certain revolution The clock pulses for rising.A reference value storage signal is for reading in benchmark image to benchmark memory 50 by Memory Controller 55 The signal of data, by operator a reference value storage switch is operated(Omit diagram)And supply.Judge that commencing signal is indicated for The signal that reference image data starts with the comparison of inspection image data, switchs by operator's operation judges(Omit Diagram)And supply.
In the composition, as the pre-treatment of quality check procedures, it is taken into and processes on paper W with through characteristic The corresponding reference image data in processing part.First, operator confirms the printing shape of paper W in the examination printing carried out using paper W State.When confirming that the printing state is good, using the operation of a reference value storage switch, start to supply benchmark to control device 46 Value storage signal.If exporting the reference signal for representing the reference position for checking cylinder 45 from rotary encoder, start to be taken into The reference image data of the paper W for keeping on cylinder 45/transporting is checked, and is stored to benchmark memory 50.
After the reference image data of the paper W for being kept/being transported by inspection cylinder 45 is stored in benchmark memory 50, pass through Offer judges commencing signal and starts judgement process.It is same with the reading of reference image data first in the judgement is processed, With the rotation, the reading detection for checking the paper W that cylinder 45 keeps/transports corresponding with detection memory 51 that check cylinder 45 View data.Then, will determine that the inspection image data read in during process is compared with the reference image data for prestoring, Allow in level difference according to whether the level value of two data is converged in, judge paper W on process with the processing department through characteristic Whether divide qualified.
As shown in figure 3, for example by the shooting of color camera 42, many pieces of scraps of paper on the paper W as check object (Bank note and marketable securities etc.)In Wa, from UV-LED luminaire 41a, 41b be irradiated to the ultraviolet of imaging surface only transmit on paper W plus Work with the processing part PE through characteristic, and be irradiated to the luminous processing unit 45a for checking cylinder 45, the then luminous place Reason portion 45a lights.
Also, the light of the visible region for sending passes through ultraviolet cutoff wave filter 43(I.e. ultraviolet is cut off)And it is incident Color camera 42.On the other hand, the other parts such as the pattern part VE for being printed by common visual ink are although directly reflect Ultraviolet, but because its ultraviolet for reflecting is ended by ultraviolet cutoff wave filter 43, so dimmed.
Thereby, it is possible to detailed inspection watermark and security window etc. with the presence or absence of processing part PE through characteristic, profile And position.
According to described the present embodiment, due to check device 40 can be utilized to check the processing part having through characteristic PE, so the printing quality of paper W can be improved further.
In addition, the invention is not restricted to above-described embodiment, can carry out in the range of the invention thought without departing from the present invention Various changes.
Industrial applicibility
The present invention sheet-shaped check device can apply to quality management it is strict carry out bank note and security printing etc. The special printing machine of printing.

Claims (1)

1. a kind of sheet-shaped check device, is to implement the sheet-shaped check device with the processing through characteristic, It is characterized in that including:
Supporting member, sends the material of the light of visible region when utilizing and irradiated by ultraviolet with the sheet-shaped relative face Processed;
Light source, to the sheet-shaped irradiation bag light with violet rays;
Camera head, shoots described sheet-shaped;
Ultraviolet filter, by the ultraviolet of light reflecting from described sheet-shaped and described supporting member, from the light source Line ends, and only makes the incident camera head of light of the wavelength length of wavelength ratio ultraviolet;And
Control device, using the incident camera head, the light of visible region that sends from the supporting member, judges institute Whether the processing for stating sheet-shaped transmission characteristic is qualified.
CN201310415346.3A 2012-09-19 2013-09-12 Inspection apparatus for sheet Expired - Fee Related CN103660550B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012205373A JP5971800B2 (en) 2012-09-19 2012-09-19 Sheet inspection equipment
JP2012-205373 2012-09-19

Publications (2)

Publication Number Publication Date
CN103660550A CN103660550A (en) 2014-03-26
CN103660550B true CN103660550B (en) 2017-04-26

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CN201310415346.3A Expired - Fee Related CN103660550B (en) 2012-09-19 2013-09-12 Inspection apparatus for sheet

Country Status (4)

Country Link
US (1) US8835876B2 (en)
EP (1) EP2711692B1 (en)
JP (1) JP5971800B2 (en)
CN (1) CN103660550B (en)

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WO2013026791A1 (en) * 2011-08-22 2013-02-28 Windmöller & Hölscher Kg Machine and method for printing webs of material
US9656456B2 (en) * 2011-08-22 2017-05-23 Windmoeller & Hoelscher Kg Machine and method for printing material webs
CN103808658B (en) * 2014-02-17 2015-12-30 中国人民银行印制科学技术研究所 A kind of flaky material perspective pick-up unit
JP2017127976A (en) * 2016-01-18 2017-07-27 株式会社小森コーポレーション Printer
JP6658166B2 (en) * 2016-03-18 2020-03-04 コニカミノルタ株式会社 Reading device, reading method, and reading program

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Also Published As

Publication number Publication date
EP2711692A3 (en) 2015-06-17
EP2711692B1 (en) 2016-12-21
JP5971800B2 (en) 2016-08-17
US8835876B2 (en) 2014-09-16
EP2711692A2 (en) 2014-03-26
JP2014059795A (en) 2014-04-03
CN103660550A (en) 2014-03-26
US20140077101A1 (en) 2014-03-20

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Granted publication date: 20170426